CXA1851N Up/Down Converter for 900 MHz-Band Mobile Communications For the availability of this product, please contact the sales office. Description 20 pin SSOP (Plastic) The CXA1851N is an up/down converter IC for 900 MHz-band mobile communications. This is suitable for 900 MHz-band digital cordless telephone (CT2) and digital cellular. Features • • • • • Transmission/reception converter on a single chip Operating frequency: 800 to 900 MHz Supply voltage: 2.7 to 4.5 V Power saving function 20-pin SSOP package used for set size reduction Absolute Maximum Ratings (Ta=25°C) • • • • Applications • CT2 digital cordless telephone • Digital cellular Structure Bipolar silicon monolithic IC Supply voltage Vcc 5 V Operating temperature Topr –20 to +75 °C Storage temperature Tstg –65 to +150 °C Allowable power dissipation PD 530∗ mW ∗ When mounted on a 505×0×1.6 mm copperfoiled glass epoxy board Recommended Operating Conditions Supply voltage Vcc 2.7 to 4.5 V Vcc (D) LO IN (D) LO b (D) LO b (U) LO IN (U) IF IN IF b GND MIX OUT2 20 19 18 17 16 15 14 13 12 11 MIX 2 3 4 5 6 7 8 9 10 RF b RF IN PEAKING OUT P/S (D) P/S (U) Vcc (U) RF OUT GND MIX OUT1 REG 1 GND LNA REG MIX RF PRE AMP RF AMP IF AMP OSC BUFFER AMP IF OUT Block Diagram and Pin Configuration Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. —1— E93505-TE CXA1851N Pin Description 1 2 Typical pin voltage (V) GND 0.0 RF BYPASS 1.1 3 RF INPUT Pin No. Symbol Equivalent circuit Description 0.9 REG 2 4 PEAKING OUT 0.12 5 P/S (for DOWN CONV.) 0 to 4.5 6 P/S (for UP CONV.) 0 to 4.5 7 VCC (for Up CONV.) 2.7 to 4.5 3 4 REG GND pin for the down converter. MIX input by-pass pin for the down converter. RF input pin for the down converter. Because of high impedance, a 4.7 nH external chip inductor should be used for impedance matching. Emitter pin for the low-noise amplifier. Connect an approximately 3 pF chip capacitor and an approximately 22Ω chip resistor in series to the GND. Power saving control pin for the down converter. OFF when Vp/s≤1.0 V; ON when Vp/s≥1.8 V 5 Power saving control pin for the up converter. OFF when Vp/s≤1.0 V; ON when Vp/s≥1.8 V 6 Power supply for the up converter. REG 8 RF OUTPUT 9 GND 8 2.7 (Vcc=2.7V) RF output pin for the up converter. Connect this pin to the Pin 7 power supply via the 15 nH chip inductor. 0.0 GND pin for the up converter RF amplifier. —2— CXA1851N Pin No. Symbol 10 MIX OUT1 Typical pin voltage (V) 2.3 11 MIX OUT2 2.3 12 GND 0.0 13 IF BYPASS 1.03 14 IF INPUT 1.03 Equivalent circuit 10 Description 11 14 13 REG 15 OSC INPUT (for UP CONV.) 1.8 16 OSC BYPASS (for UP CONV.) OSC BYPASS (for DOWN CONV.) OSC BYPASS (for DOWN CONV.) Vcc (for DOWN CONV.) 1.8 17 18 19 1.85 15 16 18 17 1.85 MIX output pin for the up converter. MIX output pin for the up converter. Connect an approximately 4.7 nH chip inductor and an approximately 3.5 pF chip capacitor between this pin and Pin 10 to form a tank circuit. GND pin for the oscillator buffer amplifier and mixer blocks of the up converter. IF input by-pass pin for the up converter. IF input pin for the up converter. Because of high impedance, an external matching circuit is necessary which consists of a 220 nH chip inductor and an approximately 1.5 pF chip capacitor. Oscillator input pin for the up converter. A matching circuit consisting of a 51Ω resistor is necessary. Oscillator input by-pass pin for the up converter. Oscillator input by-pass pin for the down converter. Oscillator input pin for the down converter. A matching circuit consisting of a 51Ω resistor is necessary. Power supply for the down converter. 2.7 to 4.5 20 20 IF OUTPUT 1.45 IF output pin for the down converter. —3— CXA1851N Electrical Characteristics (Ta=25°C, VCC=2.7V, ZL=ZS=50Ω) Item Up Converter Block ∗1 Current consumption Conversion gain RF output power Noise figure Lo leak IF leak Standby current consumption Power saving control voltage Rise time Down Converter Block ∗3 Current consumption Conversion gain IF output power Third-order intermodulation distortion Noise figure Standby current consumption Power saving control voltage Rise time Symbol ICC CG Pout NF ISO (Lo) ISO (IF) ICC (PD) Vp/s (ON) Vp/s (OFF) Tup Conditions Min. For no signal input Pin= - 40dBm Pin= -10dBm, 50Ω load DSB mode Pin= - 10dBm Pin= - 10dBm 6pin (P/S)<1.0V Typ. 18.0 17.5 0 Max. 25.0 35.0 20.5 25.5 3 13 18 - 25.0 - 10 - 12.0 - 5 220 ∗2 350 ∗2 1.8 4.5 1.0 2.5 5.0 Unit mA dB dBm dB dBm dBm µA V V µs ICC CG Pout (IF) IM3 For no signal input 8.0 15.0 22.0 mA Pin= - 40dBm, 50Ω load 15.0 18.0 23.0 dB Pin= - 10dBm, 50Ω load - 4.5 - 2.0 dBm 49.0 dBc fRF1=866.4MHz, Pin1= - 40dBm 45 fRF2=866.8MHz, Pin2= - 40dBm NF DSB mode 7.5 10 dB ICC (PD) 5pin (P/S)≤1.0V 220 ∗2 350 ∗2 µA Vp/s (ON) 1.8 4.5 V Vp/s (OFF) 1.0 V Tup 2.5 5.0 µs ∗1: fIFin=150.05MHz, fRFout=864.05 to 868.05MHz fLoin=1014.10 to 1018.1MHz (- 9dBm) ∗2: These are the total values for the up and down converters. ∗3: fRFin=864.05 to 868.05MHz fLoin=1014.10 to 1018.1MHz (- 9dBm) Typical Reference characteristics (Ta=25°C, VCC=2.7V, ZL=ZS=50Ω) Item Up Converter Block Third-order intermodulation distortion Symbol Conditions IM3 fIF1=150.4MHz, PIF1= - 30dBm fIF2=150.8MHz, PIF2= - 30dBm Down Converter Block 1 dB compression Lo leak RF leak P- 1dB ISO (Lo) ISO (RF) Output conversion, 50Ω load Pin= - 40dBm Pin= - 40dBm —4— Typ. Unit 39.0 dBc - 7.0 - 29.0 - 44.0 dBm dB dB 4.7N 6 180p 1500p —5— RF PRE AMP 13 7 8 MIX OUT1 5 14 GND 15 RF OUT 16 120p 15n MIX RF AMP 120p 120p MIX OUT2 GND IF b IF IN LO IN (U) 30p LO b (U) 30p LO b (D) 30p 30p 120p LO IN (D) Vcc (D) IF OUT 1500p 51Ω 1.5p 51Ω LO SG Vcc (U) 4 REG 17 P/S (U) 3 P/S (D) REG OSC BUFFER AMP 18 22Ω 3p 2 PEAKING OUT LNA IF AMP 19 4.7N 1 RF IN RF b 20 120p 120p GND CXA1851N Electrical Characteristics Test Circuit 1 220n 12 9 10 IF SG 11 MIX 10p 4.7N NOISE SOURCE 4.7N 180n 1500p —6— 7 120p 120p MIX OUT2 GND IF b IF IN 51Ω 1.5p 51Ω 220n 12 10p 8 9 10 4.7N NF METER 13 MIX OUT1 6 RF PRE AMP 14 GND 5 15 RF OUT 16 120p 15n MIX RF AMP LO IN (U) 30p LO b (U) 30p LO b (D) 30p 30p 120p LO IN (D) Vcc (D) 1500p IF OUT LOSG Vcc (U) 4 REG 17 P/S (U) 3 P/S (D) 2 REG OSC BUFFER AMP 18 3p 1 PEAKING OUT LNA IF AMP 19 22Ω 4.7N RF b 20 120p RF IN 120p GND NF METER CXA1851N Electrical Characteristics Test Circuit 2 Items: NF (D), NF (U) NOISE SOURCE 11 MIX LNA TX GCA SW 1 to 10mW 864 to 868.2MHz RX —7— F/F ×5 PLL RSSI FM DEMOD Q I CXA 1744R (IF A MP) 300.1MHz 27.87MHz 139.35MHz CXA 1852N (QUA DRA TURE MODULA TOR) 150.05MHz CXA 1851N (UP/DOWN CONV ERTER) ∑ 1014 to 1018.2MHz PLL 150.05MHz 10.7MHz Digital cordless telephone chip set (CXA1744R/CXA1851N/CXA1852N) Block diagram FREE CH DETECTION RSSI BIT STREAM CXA1851N CXA1851N (Down-Con) fRF vs. NF characteristics (Down-Con) fRF vs. CG characteristics 15.0 20.0 Ta=25°C Ta=80°C Ta=-30°C CG (dBm) NF (dBm) Vcc=2.7V LO sweep (- 9dBm) 10.0 5.0 100 fRF 500 (MHz) 15.0 Vcc=2.7V LO sweep (- 9dBm) RF sweep (- 40dBm) IF=150MHz 10.0 100 1000 1000 DS3 (Down-Con) LO input level vs. CG characteristics 25 (Down-Con) Pin vs. Pout and IM3 characteristics 10 Vcc=2.7V RF=866MHz (- 40dBm) LO=1016Hz (- 9dBm) 0 - 10 20 - 20 CG (dB) Pout, 3rd order distortion (dBm) 500 fRF (MHz) Ta=25°C Ta=80°C Ta=-30°C - 30 Vcc=2.7V RF1=866.4MHz RF2=866.8MHz LO=1016Hz (- 9dBm) - 40 - 50 15 10 - 60 Ta=25°C Ta=80°C Ta=-30°C Ta=25°C Ta=80°C Ta=-30°C - 70 - 80 - 40 - 30 - 20 - 10 Pin (dBm) 0 5 -27 - 24 - 21 - 18 - 15 - 12 - 9 - 6 LO Input level (dBm) 10 (Down-Con) fRF vs. NF characteristics -3 (Down-Con) fRF vs. CG characteristics 15.0 25.0 Ta=25°C Ta=80°C Ta=-30°C CG (dBm) NF (dBm) Vcc=4.5V LO sweep (- 9dBm) 10.0 5.0 100 fRF 500 (MHz) 20.0 15.0 10.0 100 1000 —8— Vcc=4.5V LO sweep (- 9dBm) RF sweep (- 40dBm) IF=150MHz 500 fRF (MHz) Ta=25°C Ta=80°C Ta=-30°C 1000 0 CXA1851N (Down-Con) Pin vs. Pout and IM3 characteristics 10 (Down-Con) LO input level vs. CG characteristics 25 - 10 20 - 20 CG (dB) Pout, 3rd order distortion (dBm) 0 - 30 Vcc=4.5V RF1=866.4MHz RF2=866.8MHz LO=1016Hz (- 9dBm) - 40 - 50 15 Vcc=4.5V RF=866MHz (- 40dBm) LO=1016Hz (- 9dBm) 10 - 60 Ta=25°C Ta=80°C Ta=-30°C Ta=25°C Ta=80°C Ta=-30°C - 70 - 80 - 40 - 30 - 20 - 10 Pin (dBm) 0 5 -27 - 24 - 21 - 18 - 15 - 12 - 9 - 6 LO input level (dBm) 10 (Down-Con) P/S voltage level vs. ICC characteristics 30.0 Vcc=4.5V No signal input 25.0 25.0 20.0 20.0 Icc (mA) Icc (mA) 0 (Down-Con) P/S voltage level vs ICC characteristics 30.0 Vcc=2.7V No signal input 15.0 10.0 15.0 10.0 Ta=25°C Ta=80°C Ta=-30°C 5.0 Ta=25°C Ta=80°C Ta=-30°C 5.0 0 0 0 1.0 2.0 3.0 4.0 P/S voltage level (V) 5.0 0 1.0 2.0 3.0 P/S voltage level (V) 4.0 5.0 (Up-Con) Vcc vs. ICC characteristics (Down-Con) Vcc vs. ICC characteristics 50 50 Vcc=VP/S No signal input Vcc=VP/S No signal input 40 40 Ta=25°C Ta=80°C Ta=-30°C Ta=25°C Ta=80°C Ta=-30°C 30 Icc (mA) Icc (mA) -3 30 20 20 10 10 Recommended operating range Recommended operating range 0 0 0 1.0 2.0 2.7 3.0 Vcc (V) 0 4.0 4.5 5.0 1.0 2.0 2.7 3.0 Vcc (V) —9— 4.0 4.5 5.0 CXA1851N (Up-Con) Pin vs. Pout and IM3 characteristics (Up-Con) LO input level vs. CG characteristics 25 10 - 10 20 - 20 CG (dB) Pout, 3rd order distortion (dBm) 0 - 30 Vcc=2.7V IF1=150.4MHz IF2=150.8MHz LO=1016Hz (- 9dBm) - 40 - 50 15 Vcc=2.7V IF=150MHz (- 40dBm) LO=1016Hz 10 - 60 Ta=25°C Ta=80°C Ta=-30°C Ta=25°C Ta=80°C Ta=-30°C - 70 - 80 - 40 - 30 - 20 - 10 Pin (dBm) 0 5 -27 - 24 - 21 - 18 - 15 - 12 - 9 - 6 LO input level (dBm) 10 (Up-Con) Pin vs. Pout and IM3 characteristics -3 0 (Up-Con) LO input level vs. CG characteristics 25 10 - 10 20 - 20 CG (dB) Pout, 3rd order distortion (dBm) 0 - 30 Vcc=4.5V IF1=150.4MHz IF2=150.8MHz LO=1016Hz (- 9dBm) - 40 - 50 15 Vcc=2.7V IF=150MHz (- 40dBm) LO=1016Hz 10 - 60 Ta=25°C Ta=80°C Ta=-30°C - 70 - 80 - 40 - 30 - 20 - 10 Pin (dBm) 0 Ta=25°C Ta=80°C Ta=-30°C 5 -27 - 24 - 21 - 18 - 15 - 12 - 9 - 6 LO input level (dBm) 10 0 (Down-Con) P/S voltage level vs. ICC characteristics 50 (Up-Con) P/S voltage level vs. ICC characteristics 50 Vcc=2.7V No signal input Vcc=2.7V No signal input 40 40 30 30 Icc (mA) Icc (mA) -3 20 20 Ta=25°C Ta=80°C Ta=-30°C 10 10 Ta=25°C Ta=80°C Ta=-30°C 0 0 1.0 2.0 3.0 P/S voltage level (V) 4.0 0 5.0 —10— 0 1.0 2.0 3.0 4.0 P/S voltage level (V) 5.0 CXA1851N Notes on Operation (1) Electrostatic sensitive diveces because of the high-frequency process. (2) Earth pattern should be as wide as possible and do not increase ground impedanse to prevent from the parasitic osellation. (3) Wire the GND pin as short as possible. (4) Connect a by-pass capacitor to the VCC pin. —11— CXA1851N Package Outline Unit : mm 20PIN SSOP (PLASTIC) 10 + 0.10 0.22 – 0.05 1.5 ± 0.1 0.65 A 0.10 M 0.1 ± 0.1 0.5 ± 0.2 1 6.4 ± 0.2 4.4 ± 0.1 11 1.8 MAX 20 + 0.10 0.15 – 0.05 1.0 ± 0.1 7.0 MAX 0° to 10° 0.575 MAX 0.15 DETAIL A PACKAGE STRUCTURE MOLDING COMPOUND EPOXY / PHENOL RESIN SOLDER PLATING SONY CODE SSOP-20P-L072 LEAD TREATMENT EIAJ CODE SSOP020-P-0225-BN LEAD MATERIAL COPPER ALLOY PACKAGE WEIGHT 0.1g JEDEC CODE —12—